High-pressure gradual change forming device for inside of sheet

Abstract

The invention relates to a high-pressure gradual change forming device for the inside of sheet, which belongs to the technical field of metal forming. The high-pressure gradual change forming device comprises an upper die assembly, a lower die assembly, a guide mechanism and a plate pressing mechanism, wherein the upper end and the lower end of the guide mechanism are respectively movably connected with the upper die assembly and the lower die assembly; the plate pressing mechanism is movably arranged on the lower die assembly and is directly opposite to the upper die assembly; and the sheet to be pressed is positioned between the upper die assembly and the plate pressing mechanism. A pressure medium is adopted for forming in the forward direction and the backward direction, the forward pressure medium in a lower hydraulic chamber has the effects that force on the sheet is balanced and the imbalanced force on the edge of a rigid convex die can be avoided; and the backward pressure medium in an upper hydraulic chamber has the effect on preventing a part of the sheet contacting a concave die to cause the part of the sheet to be seriously deformed and damaged.

Description

Technical field [0001] The invention relates to a method in the technical field of metal forming, in particular to a high-pressure gradual forming device in a thin plate. Background technique [0002] Magnesium alloy has the advantages of light specific gravity and high specific strength. It has great application potential in aerospace, electronic communication and transportation industries. Magnesium alloys are mainly divided into cast magnesium alloys and wrought magnesium alloys. At present, most magnesium alloy parts are realized by casting method. However, compared with cast magnesium alloy, wrought magnesium alloy has better mechanical properties. Therefore, the development of new wrought magnesium alloy and its deformation process has become a research hotspot of magnesium alloy. [0003] Among wrought magnesium alloys, magnesium alloy sheets are the most widely used, among which sheet deep drawing is a hot spot in the research of magnesium alloy sheets. Mainly, the parts ...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the above-mentioned deficiencies existing in the prior art, and provides a thin-plate internal high-pressure gradual forming device, which solves the shortcomings in the prior art that the magnesium alloy is deeply deformed locally, cannot form large-area complex parts, and the magnesium alloy automobile door inner plate, etc. Complex Cover Forming Problems

Images